Zirconium is a chemical element with symbol Zr and atomic number 40. The name zirconium is taken from the name of the mineral zircon, the most important source of zirconium. Zirconium is a lustrous, greyish-white, soft, ductile, malleable metal that is solid at room temperature, though it is hard and brittle at lesser purities. Zirconium is a by-product of the mining and processing of the titanium minerals ilmenite and rutile, as well as tin mining. -Wikipedia Quarter not included